JP5535155B2 - Flow path switching valve and fluid material discharge control device using the same - Google Patents

Flow path switching valve and fluid material discharge control device using the same Download PDF

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Publication number
JP5535155B2
JP5535155B2 JP2011192486A JP2011192486A JP5535155B2 JP 5535155 B2 JP5535155 B2 JP 5535155B2 JP 2011192486 A JP2011192486 A JP 2011192486A JP 2011192486 A JP2011192486 A JP 2011192486A JP 5535155 B2 JP5535155 B2 JP 5535155B2
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Prior art keywords
discharge
seat surface
valve seat
flow path
chamber
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JP2013053684A5 (en
JP2013053684A (en
Inventor
雄太 大村
洋平 枝川
進 村田
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株式会社コガネイ
キヤノン株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/056Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with ball-shaped valve members
    • F16K11/0565Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with ball-shaped valve members moving in a combined straight line and rotating movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86549Selective reciprocation or rotation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86879Reciprocating valve unit

Description

  The present invention relates to a flow path switching valve provided in a supply flow path for supplying a fluid material such as grease or liquid to a discharge tool, and a discharge control apparatus using the flow path switching valve.

  Lubricating oils such as grease may be applied to electrical appliances and machine parts as members to be applied. On the other hand, in a process of manufacturing an electronic component, a liquid such as a chemical solution may be applied using a member to be processed as a member to be applied. A discharge device is usually used to discharge an incompressible fluid material such as lubricating oil or liquid onto a member to be coated. The discharge device is used by being disposed between a container containing a flowable material and a discharge nozzle. The conventional discharge device has a flow path switching form in which an electromagnetic valve is incorporated. However, since the discharge device incorporates a member such as an electromagnetic valve, the discharge device has a heavy and complicated structure. . For this reason, the conventional discharge device is moved by using a driving device in the two axial directions of X and Y, or the discharge device is fixed to the mounting base and the object to be coated is moved.

  As a discharge device, there is a type in which a pump member is elastically deformed to perform a pump operation, but this type of discharge device also has a complicated structure. A conventional discharge device having a pump member that is elastically deformed, such as a diaphragm, is suitable when the discharge amount is relatively large. However, it is difficult to apply a small amount of a fluid material of 1 g or less to a member to be coated. It was difficult to accurately control the discharge amount.

  The amount of flowable material applied to electrical products and machine parts varies depending on the member to be coated. As described above, the flowable material may be applied in an amount of 1 g or less. In some cases, a large amount of fluid material is applied.

  In order to supply fluid material such as lubricating oil to the discharge tool with high accuracy, the fluid material in the container is filled and injected into the control flow path, and the fluid material from the control flow path toward the discharge tool The inventor has considered a discharge device having a structure for discharging the water. In order to make such a discharge device, the control flow path is branched to the guide flow path between the container containing the flowable material and the discharge nozzle, so the three-way valve is used as a flow path switching valve. Will do. Patent Document 1 describes a three-way valve for switching a flow path.

JP 2002-147625 A

  As described in Patent Document 1, the three-way valve having a spherical valve body is configured to move the valve body by a guide groove formed in the valve box. It is necessary to move the valve body for a long distance. For this reason, a response delay occurs between the timing when the port is desired to be opened and closed and the time when the valve element actually finishes opening and closing the port. As a result, dripping from the discharge nozzle occurs, the need for suck back occurs, or the amount of liquid flowing in the flow path increases, so a controlled amount of liquid (a small amount) is supplied to one flow path. Therefore, it becomes difficult to guide to other flow paths.

  An object of the present invention is to provide a fluid flow material such as grease, which does not cause dripping, does not cause the need for suck back, has excellent sealing performance and responsiveness, and can perform high-precision quantitative discharge control. The object is to provide a switching valve and a discharge control device.

The flow path switching valve of the present invention includes an injection chamber to which a fluid material pressurized with compressed air is supplied, a cylindrical outer valve seat surface connected to the injection chamber, and a radially inner side of the outer valve seat surface. An inner valve seat surface that divides the valve chamber between a cylindrical partition member that is disposed in the partition wall and partitions the inner discharge chamber and the outer supply chamber, and the outer valve seat surface that is provided at a front end side portion of the partition member A discharge control block having a control flow path communicating with the supply chamber and changing in volume by a discharge rod; a base disposed in the valve chamber for opening and closing the inner valve seat surface; and a base provided integrally with the base And a valve body having an annular flange portion that opens and closes the outer valve seat surface by elastic deformation,
A first state in which the valve body is in contact with the inner valve seat surface and the annular flange portion is in contact with the outer valve seat surface; and the valve body is in contact with the inner valve seat surface, and the annular flange portion is in the Operates into a second state in which the valve body is separated from the outer valve seat surface and a third state in which the valve body is separated from the inner valve seat surface and the annular flange is in contact with the outer valve seat surface, and discharges a fluid material. A flow path switching valve for switching a guide flow path to guide the tool,
By retreating the discharge rod, the valve body is set to the second state, a filling operation for moving the flowable material from the injection chamber to the control flow path, the discharge rod advances, and the pressure in the supply chamber is increased. by increasing the discharge operation for discharging the valve body from a discharge port by moving the flowable material into the discharge chamber from the control channel as the third state, is carried out, and the discharge after the discharge operation The valve body is moved to the first state by the fluid material under pressure when the rod is moved to the retracted position and the fluid material is filled in the control flow path .

The fluid material discharge control apparatus according to the present invention includes an injection chamber to which a fluid material pressurized with compressed air is supplied, a cylindrical outer valve seat surface connected to the injection chamber, and a radial direction of the outer valve seat surface. An inner valve that divides a valve chamber between a cylindrical partition member that is disposed inward and partitions an inner discharge chamber and an outer supply chamber, and the outer valve seat surface that is provided at a front end side portion of the partition member. A discharge control block formed with a seat surface, a control flow path communicating with the supply chamber and changing in volume by the discharge rod; a discharge means provided in the discharge control block for reciprocating the discharge rod; and the valve A base portion that is disposed indoors and opens and closes the inner valve seat surface, and a valve body that is provided integrally with the base portion and has an annular flange portion that opens and closes the outer valve seat surface by elastic deformation,
A first state in which the valve body is in contact with the inner valve seat surface and the annular flange portion is in contact with the outer valve seat surface; and the valve body is in contact with the inner valve seat surface, and the annular flange portion is in the Operates into a second state in which the valve body is separated from the outer valve seat surface and a third state in which the valve body is separated from the inner valve seat surface and the annular flange is in contact with the outer valve seat surface, and discharges a fluid material. A discharge control device for a flowable material discharged to a tool,
By retreating the discharge rod, the valve body is set to the second state, a filling operation for moving the flowable material from the injection chamber to the control flow path, the discharge rod advances, and the pressure in the supply chamber is increased. by increasing the discharge operation for discharging the valve body from a discharge port by moving the flowable material into the discharge chamber from the control channel as the third state, is carried out, and the discharge after the discharge operation The valve body is moved to the first state by the fluid material under pressure when the rod is moved to the retracted position and the fluid material is filled in the control flow path .

  In the fluid material discharge control apparatus according to the present invention, the discharge means has a drive case in which the discharge rod is reciprocally accommodated, and the control flow path filled with the fluid material is directed vertically. The drive case is attached to the discharge control block by inserting the discharge rod into the control flow path under the state where the discharge control block is arranged and overflowing the flowable material from the control flow path. It is characterized by that. In the discharge control apparatus of the present invention, the discharge means includes a drive rod that drives the discharge rod and a drive case that accommodates the drive rod in a reciprocating manner in the axial direction, and adjusts a moving stroke of the drive rod. A stroke adjusting member is provided in the drive case.

  The flow path switching valve of the present invention, when the pressure on the primary side is higher than the pressure on the control flow path side, allows the primary side and the control flow path to communicate with each other and shuts off the control flow path and the secondary flow path I do. When the pressure on the primary side and the pressure on the control flow path become the same, the primary side and the control flow path are blocked, and the control flow and the secondary side are blocked. When the pressure on the control channel side becomes higher than that on the primary side, the discharge operation is performed with the control channel and the secondary side communicating with each other while the primary side and the control channel are kept shut off. In particular, when shifting from the balance state to the discharge operation, the pressure on the control flow path side is slightly higher than the pressure on the primary side, and the base portion of the valve body opens the inner valve seat surface. Therefore, the fluid material can be discharged to the secondary side according to a slight volume change of the control flow path.

  Since the flow path switching valve of the present invention has a very small amount of movement of the valve body when shifting from the balance state to the discharge operation, the discharge accuracy can be set with high accuracy even if the discharge amount is small. .

  Since the discharge control device of the present invention has a small and highly sensitive flow path switching valve, the discharge control device can be reduced in size and weight, and an operator manually covers the discharge device without moving the discharge device automatically by the moving means. A fluid material can be discharged onto the application member.

It is a front view which shows the discharge apparatus of grease. It is sectional drawing which expands and shows a part of FIG. (A)-(C) are the partially expanded sectional views of FIG. 1 which each show the opening-and-closing state of the valve body shown by FIG. FIG. 6 is a partially omitted cross-sectional view of a grease discharging device showing an assembling procedure. FIG. 6 is a partially omitted cross-sectional view showing a modified example of the grease discharge device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A grease discharge device 10 shown in FIG. 1 is used for supplying grease G as a fluid material accommodated in a storage container 11 to a discharge nozzle 12 as a discharge tool. A storage container 11 called a syringe is detachably connected to the primary side of the flow path switching valve 13, and the distal end portion of the discharge pipe 14 connected to the secondary side of the flow path switching valve 13 is a discharge nozzle 12. .

  As shown in FIG. 2, the flow path switching valve 13 has a cylindrical injection side portion 15 and a cylindrical discharge side portion 16, and inside the injection side portion 15 and the discharge side portion 16, respectively. A guide channel for guiding the grease G is formed to penetrate therethrough. The injection side portion 15 and the discharge side portion 16 have substantially the same outer diameter, and are fitted to the attachment hole formed in the joint portion 17 so as to be coaxial and attached to the joint portion 17. In the flow path switching valve 13 shown in FIG. 2, a valve case 18 is configured by combining an injection side portion 15, a discharge side portion 16 and a joint portion 17. However, the valve case 18 having these portions may be integrally formed. For example, two portions of the discharge side portion 16 and the joint portion 17 may be integrally formed.

  An injection chamber 15 a is formed in the injection side portion 15, and the grease G inside thereof is supplied to the injection chamber 15 a from the storage container 11. A discharge chamber 16 a is formed in the discharge side portion 16, and the discharge chamber 16 a communicates with the discharge nozzle 12.

  The injection side portion 15 is formed with a cylindrical outer valve seat surface 21 connected to the injection chamber 15a with the constricted portion 19 therebetween. The discharge side portion 16 is provided with a cylindrical partition member 22 disposed radially inward of the outer valve seat surface 21. The partition member 22 has a distal end portion that enters the inside of the injection side portion 15 and faces the outer valve seat surface 21 in the radial direction. The partition member 22 includes an inner discharge chamber 16a and an outer annular supply chamber 17a. A valve chamber 23 is formed between the outer valve seat surface 21 and the supply chamber 17a. An injection chamber 15 a communicates with the valve chamber 23.

  The opening end surface at the tip of the partition member 22 is an inner valve seat surface 24 in the radial direction. A tapered surface 19 a is formed between the constricted portion 19 of the injection side portion 15 and the outer valve seat surface 21, and the inner valve seat surface 24 faces the tapered surface 19 a across the valve chamber 23.

  A valve body 25 is disposed in the valve chamber 23. The valve body 25 has a central base portion 25a and an annular flange portion 25b outside the base portion 25a. The valve body 25 is integrally formed of a rubber material. Molded. The base portion 25a moves between a position in contact with the inner valve seat surface 24 and a position away from the inner valve seat surface 24 to open and close the inner valve seat surface 24, and the annular flange portion 25b elastically deforms to open and close the outer valve seat surface 21.

  The outer valve seat surface 21 and the cylindrical partition member 22 are arranged coaxially. Therefore, the inner valve seat surface 24 provided at the front end side portion of the partition member 22 is also coaxial with the outer valve seat surface 21. The valve body 25 is axially symmetric as shown in FIGS. 2, 3 </ b> A, 3 </ b> B, and 3 </ b> C, and with respect to the outer valve seat surface 21, the cylindrical partition member 22, and the inner valve seat surface 24. It is arranged coaxially. With these coaxial arrangements, the annular flange portion 25b and the base portion 25a of the valve body 25 can reliably close the outer valve seat surface 21 and the inner valve seat surface 24, respectively.

  A holder 26 to which the storage container 11 is detachably attached is attached to the injection side portion 15 of the flow path switching valve 13. On the other hand, a joint 27 to which the discharge pipe 14 of the discharge nozzle 12 is connected is attached to the discharge side portion 16.

  The joint portion 17 constituting the valve case 18 of the flow path switching valve 13 is formed with a communication hole 28 communicating with the annular supply chamber 17a outside the partition member 22, and the communication hole 28 is connected to the supply chamber 17a and the communication chamber 28a. The central axis is perpendicular to the discharge chamber 16a. One end of the communication pipe 31 is screwed to the joint portion 17, and the other end of the communication pipe 31 is screwed to the discharge control block 32. The discharge control block 32 is connected to the valve case 18 by a communication pipe 31. A control flow path 33 extending in a direction parallel to the injection side portion 15 is formed in the discharge control block 32, and the grease G in the storage container 11 is filled in the control flow path 33 with the injection chamber 15 a, the valve chamber 23, The supply chamber 17a, the communication hole 28 and the through hole 31a in the communication pipe 31 are filled. In order to seal between the communication pipe 31 and the joint portion 17, a seal member 34a is fastened to the end surface of the joint portion 17 by a nut 35a. In order to seal between the communication pipe 31 and the discharge control block 32, a seal member 34b is fastened to the end surface of the discharge control block 32 by a nut 35b.

  In order to fill the control channel 33 with the grease G in the storage container 11 and supply the filled grease G from the control channel 33 to the discharge nozzle 12 via the discharge chamber 16a, the discharge control block 32 includes A discharge rod 36 that reciprocates in the control flow path 33 is provided. The discharge rod 36 is incorporated in a drive case 37 attached to the discharge control block 32.

  The drive case 37 has a cylindrical portion 37a, a bottom wall portion 37b on the proximal end side, and a mounting cylinder portion 37c on the distal end side. The mounting cylinder portion 37 c is provided with a female screw 38 b that is screw-coupled to a male screw 38 a provided in the discharge control block 32. A sliding member 42a is inserted into the sleeve 41 provided in the cylindrical portion 37a so as to be capable of reciprocating in the axial direction, and one end portion of the sliding member 42a is connected to the outside from the bottom wall portion 37b of the drive case 37. A projecting drive rod 42 is provided. The discharge rod 36 is provided on the sliding member 42a. When the drive rod 42 is driven in the axial direction, the discharge rod 36 is driven in the axial direction. In this way, the drive rod 42 and the drive case 37 that accommodates the drive rod 42 so as to reciprocate are discharge means that reciprocate the discharge rod 36. A cover 43 is incorporated in the front end portion of the drive case 37, and the discharge rod 36 passes through the end wall portion 43 a of the cover 43 and enters the control flow path 33 of the discharge control block 32.

  A compression coil spring 44 is mounted between the end wall portion 43a of the cover 43 and the sliding member 42a. A spring force in the backward direction away from the control flow path 33 is applied to the discharge rod 36 by the spring member formed of the compression coil spring 44. When the discharge rod 36 moves backward and moves in a direction protruding from the inside of the control flow path 33 to the outside, the volume of the control flow path 33 increases. On the other hand, when the discharge rod 36 is moved forward against the spring force to cause the discharge rod 36 to enter the control flow path 33, the volume of the control flow path 33 is reduced. In order to seal between the discharge rod 36 and the discharge control block 32, a seal material 45 is attached to the discharge control block 32. The sealing material 45 is prevented from coming off by a stop ring 46.

  The operation of applying the grease G to the object to be coated using the above-described grease discharge device 10 may be performed by installing the discharge device 10 on a support base (not shown) that moves in the X-axis and Y-axis directions. Alternatively, the grease G may be applied by the discharge device 10 which is installed on a fixed support base by moving the object to be coated. Furthermore, the worker may hold the discharge device 10 in his hand and perform the coating operation.

  In order to attach the discharge device 10 to the support base, a nut 47 is screwed to the male thread portion formed in the cylindrical portion 37 a of the drive case 37, and discharge is performed to the support base by a bracket (not shown) fixed by the nut 47. A device 10 is attached. In order to ensure that the grease G in the storage container 11 is supplied to the injection chamber 15a, compressed air is supplied to the storage container 11 from its upper end as shown by an arrow in FIG.

  In order to apply the grease G to the application object from the discharge nozzle 12 by the discharge device 10 described above, first, the drive rod 42 is pushed down to the lower end and the discharge rod 36 enters the control flow path 33, and then the storage container. 11 is filled in the control flow path 33. The filling operation is performed by expanding the volume of the control flow path 33 by moving the discharge rod 36 backward by the compression coil spring 44. Further, when the diameter of the discharge rod 36 is large, even if the compression coil spring 44 is not provided, the discharge rod 36 is moved backward by the pressure of the compressed air applied to the grease G of the storage container 11, and the following filling operation is performed. Is called. In this filling operation, since the pressure from the injection chamber 15a to the valve chamber 23 is higher than the pressure from the communication hole 28 to the control flow path 33, as shown in FIG. The inner valve seat surface 24 is closely contacted and closed, and the annular flange portion 25b is elastically deformed to be separated from the outer valve seat surface 21 and opened. In the operation of filling the control flow path 33 with the grease G, the pressure of the compressed air is applied to the storage container 11, so that an amount of the grease G corresponding to the filling stroke of the discharge rod 36 is in the control flow path 33. Filled.

  Under this state, when the discharge rod 36 moves backward to the retreat limit position and stops, a balanced state is achieved in which the pressures of the injection chamber 15a and the supply chamber 17a are balanced. When this balanced state is reached, a balancing operation is performed in which the annular flange portion 25b returns to its original shape by an elastic force and comes into close contact with the outer valve seat surface 21 to close it. FIG. 2 shows a balance operation state in which the discharge rod 36 is driven to the retreat limit position and the filling of the grease G into the control flow path 33 is completed.

  Next, in order to discharge and supply the grease G in the control flow path 33 toward the discharge nozzle 12, the discharge rod 36 is moved forward to contract the control flow path 33. This supply operation is performed by moving the drive rod 42 forward by a reciprocating mechanism such as a pneumatic cylinder (not shown) when the discharge device 10 is automatically operated. On the other hand, when the discharge device 10 is driven manually, the supply operation is performed by the operator pushing the drive rod 42 manually. In any drive system, the supply amount of the grease G into the control flow path 33 is determined by the forward movement stroke of the drive rod 42.

  When the supply operation is performed by moving the discharge rod 36 forward, the pressure of the grease G in the control flow path 33 by the discharge rod 36 becomes higher than the pressure of the grease G in the injection chamber 15a. The flange portion 25b is kept in close contact with the outer valve seat surface 21 and closed. On the other hand, the valve body 25 slightly moves toward the injection chamber 15a while sliding the annular flange portion 25b on the outer valve seat surface 21, and the base portion 25a is slightly separated from the inner valve seat surface 24 by the movement. open. As a result, the grease G in the control flow path 33 is discharged from the discharge nozzle 12 to the coating object through the discharge chamber 16a, the joint 27, and the discharge pipe 14.

  3B and 3C show the open / close state of the valve body 25 when the grease supply operation for discharging the grease from the discharge nozzle 12 is performed. The opening of the base portion 25a of the valve body 25, that is, the gap between the base portion 25a and the inner valve seat surface 24 is a state in which the annular flange portion 25b closes the outer valve seat surface 21 by its elastic restoring force. It changes in accordance with the flow rate of the grease G supplied from the control flow path 33 toward the discharge chamber 16a. 3B shows a case where the supply speed of the grease G supplied from the control flow path 33 to the discharge nozzle 12 is relatively high, and FIG. 3C shows a case where the supply speed of the grease G supplied is relatively low. Indicates. In this manner, the valve body 25 opens and closes the base portion 25a that opens and closes the inner valve seat surface 24 by axial movement, and opens and closes the outer valve seat surface 21 by elastic deformation and elastic restoration, and the outer valve seat according to the opening degree of the base portion 25a. Since the annular flange portion 25b that is in sliding contact with the surface 21 is provided, an amount of grease G corresponding to the supply operation stroke of the discharge rod 36 is supplied to the discharge nozzle 12 even when the discharge speed of the grease G is low. Can do.

  The discharge rod 36 is moved backward by the spring force of the coil spring 44 when the control passage 33 is filled with the grease G in the storage container 11. Since the pressure in the filling direction is applied to the grease G in the injection chamber 15a by the pressure of the compressed air applied in the storage container 11 during the backward movement, the discharge rod 36 is moved to the backward limit position without increasing the spring force. Can be moved to.

  The discharge rod 36 is incorporated in the drive case 37. The drive case 37 in which the discharge rod 36 is incorporated can be attached to the discharge control block 32 by screwing the female screw 38b of the mounting cylinder portion 37c of the drive case 37 to the male screw 38a of the discharge control block 32. FIG. 4 is a view showing a state immediately before the drive case 37 is attached to the discharge control block 32, and in a state where the grease G is filled in the control flow path 33 through the through hole 31 a of the communication pipe 31. The female screw 38b of the mounting cylinder portion 37c is screwed to the male screw 38a. That is, when the discharge device 10 is used for the first time, the storage channel 11 is attached to the holder 26 with the control flow path 33 facing upward and the drive case 37 removed, and the grease G is injected into the injection chamber with a slight amount of compressed air. 15a, and the valve case 18, the communication pipe 31, the sealing material 45, and the retaining ring 46 are filled. The grease G is slightly raised from the stop ring 46. As a result, the air contained therein is discharged from the mouth of the stop ring 46 to the atmosphere, and the air bleeding is completed. When the drive case 37 is attached as shown in FIG. 4 when the air venting is completed, the discharge rod 36 enters the grease G slightly raised from the stop ring 46, so that the air enters the control flow path 33. There is nothing.

  When the mounting cylinder part 37c is attached to the discharge control block 32, an exhaust hole 51 is formed in the mounting cylinder part 37c in order to discharge air that has entered the inside of the mounting cylinder part 37c, that is, the internal thread 38b. . Further, an exhaust guide groove 52 is formed in the end wall portion 43a of the cover 43 in the radial direction in order to guide the discharged air. Thus, when the drive case 37 is attached to the discharge control block 32, the exhaust tube 51 is formed in the mounting cylinder portion 37c, and the exhaust guide groove 52 is formed on the outer surface of the end wall portion 43a. Therefore, when the drive case 37 is attached to the discharge control block 32, air can be prevented from entering the control flow path 33. Further, since the discharge rod 36 is retracted by the coil spring 44, the operation can be easily performed.

  FIG. 5 is a partially omitted cross-sectional view showing a modified example of the grease discharge device. FIG. 5 shows the same portion of the grease discharge device as in FIG.

  In this discharge device, a cylindrical stroke adjusting member 53 is screwed to a male thread portion formed in the cylindrical portion 37 a of the drive case 37. The stroke adjusting member 53 can be arbitrarily positioned in the axial direction of the drive case 37 by rotation. When the nut 47 is fastened to the stroke adjusting member 53, the stroke adjusting member 53 is fixed at a predetermined position. The drive rod 42 is provided with a large-diameter stopper 54 that contacts the end surface of the stroke adjusting member 53. The reciprocating stroke of the drive rod 42 is set by the distance between the end face of the stroke adjusting member 53 and the stopper 54, and the reciprocating stroke of the discharge rod 36 is set by the reciprocating stroke of the driving rod 42. Thus, the supply amount of the grease G into the control flow path 33 is determined by the forward movement stroke of the drive rod 42. Therefore, by adjusting the axial position of the stroke adjustment member 53 with respect to the drive case 37. The supply amount of the grease G by the discharge rod 36 can be adjusted.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 11 Storage container 12 Discharge nozzle 13 Flow path switching valve 15 Injection side part 15a Injection chamber 16 Discharge side part 16a Discharge chamber 17 Joint part 17a Supply chamber 18 Valve case 21 Outer valve seat surface 22 Partition member 23 Valve chamber 24 Inner valve seat surface 25 Valve body 25a Base part 25b Annular flange part 31 Communication pipe 31a Through hole 32 Discharge control block 33 Control flow path 36 Discharge rod 37 Drive case 37c Mounting cylinder part 42 Drive rod 44 Compression coil spring 46 Stop ring 51 Exhaust hole 52 Exhaust guide groove G Grease

Claims (4)

  1. An injection chamber to which a flowable material pressurized with compressed air is supplied, and a cylindrical outer valve seat surface connected to the injection chamber;
    A cylindrical partition member that is arranged radially inward of the outer valve seat surface and partitions the inner discharge chamber and the outer supply chamber;
    An inner valve seat surface that is provided at a distal end side portion of the partition member and partitions a valve chamber with the outer valve seat surface;
    A discharge control block in which a control flow path communicating with the supply chamber and changing in volume by a discharge rod is formed;
    A valve body having a base portion disposed in the valve chamber for opening and closing the inner valve seat surface, and an annular flange portion integrally provided in the base portion for opening and closing the outer valve seat surface by elastic deformation;
    Have
    A first state in which the valve body is in contact with the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
    A second state in which the valve body abuts on the inner valve seat surface, and the annular flange portion is separated from the outer valve seat surface;
    A third state in which the valve body is separated from the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
    Operated on
    A flow path switching valve for switching a guide flow path for guiding a flowable material to a discharge tool,
    A refilling operation for moving the flowable material from the injection chamber to the control flow path with the valve body in the second state by retreating the discharge rod;
    A discharge operation in which the discharge rod moves forward and the pressure in the supply chamber is increased, so that the valve body is moved to the third state to move the flowable material from the control flow path to the discharge chamber and discharge from the discharge port. ,
    After the discharge operation, the discharge rod moves to the retracted position, and the valve body is moved by the pressurized flowable material while the flowable material is filled in the control flow path . 1. A flow path switching valve that shifts to one state.
  2. An injection chamber to which a flowable material pressurized with compressed air is supplied, and a cylindrical outer valve seat surface connected to the injection chamber;
    A cylindrical partition member that is arranged radially inward of the outer valve seat surface and partitions the inner discharge chamber and the outer supply chamber;
    An inner valve seat surface that is provided at a distal end side portion of the partition member and partitions a valve chamber with the outer valve seat surface;
    A discharge control block in which a control flow path communicating with the supply chamber and changing in volume by a discharge rod is formed;
    A discharge means provided in the discharge control block for reciprocating the discharge rod;
    A valve body having a base portion disposed in the valve chamber for opening and closing the inner valve seat surface, and an annular flange portion integrally provided in the base portion for opening and closing the outer valve seat surface by elastic deformation;
    Have
    A first state in which the valve body is in contact with the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
    A second state in which the valve body abuts on the inner valve seat surface, and the annular flange portion is separated from the outer valve seat surface;
    A third state in which the valve body is separated from the inner valve seat surface, and the annular flange portion is in contact with the outer valve seat surface;
    Operated on
    A discharge control device for a flowable material that discharges the flowable material to a discharge tool,
    A refilling operation for moving the flowable material from the injection chamber to the control flow path with the valve body in the second state by retreating the discharge rod;
    As the discharge rod moves forward and the pressure in the supply chamber increases, the discharge operation is performed by moving the flowable material from the control flow path to the discharge chamber with the valve body in the third state and discharging from the discharge port. When,
    After the discharge operation, the discharge rod moves to the retracted position, and the valve body is moved by the pressurized flowable material while the flowable material is filled in the control flow path . A flowable material discharge control device, wherein the flowable material transitions to one state.
  3.   3. The fluidity material discharge control device according to claim 2, wherein the discharge means has a drive case in which the discharge rod is reciprocally accommodated, and the control channel filled with the flowable material is directed upward. The discharge rod is inserted into the control flow path with the discharge control block disposed so that the flowable material overflows from the control flow path, and the drive case becomes the discharge control block. A discharge control device which is attached.
  4.   3. The fluidity material discharge control apparatus according to claim 2, wherein the discharge means includes a drive rod for driving the discharge rod and a drive case for reciprocally moving the drive rod in an axial direction. A fluidity material discharge control device, wherein a stroke adjusting member for adjusting a moving stroke of the fluid is provided in the drive case.
JP2011192486A 2011-09-05 2011-09-05 Flow path switching valve and fluid material discharge control device using the same Active JP5535155B2 (en)

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JP2011192486A JP5535155B2 (en) 2011-09-05 2011-09-05 Flow path switching valve and fluid material discharge control device using the same
US13/602,806 US9133943B2 (en) 2011-09-05 2012-09-04 Flow path switching valve and discharge control apparatus for fluid material using the same
DE201210108199 DE102012108199A1 (en) 2011-09-05 2012-09-04 Flow path switching valve and fluid material discharge control device using the same
CN 201210326581 CN103062437A (en) 2011-09-05 2012-09-05 Flow path switching valve and discharge control apparatus for fluid material using the same

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JP2013053684A (en) 2013-03-21
US9133943B2 (en) 2015-09-15
CN103062437A (en) 2013-04-24
US20130068330A1 (en) 2013-03-21

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